A compound represented by formula (1) provides an organic electroluminescence device having lifetime further improved:
wherein R
1
to R
9
, R
11
to R
18
, R
21
to R
27
, Ar, L
1
, L
2
, and L
3
are as defined in the description.
公式(1)所代表的化合物提供了具有进一步改善寿命的有机电致发光器件:
其中R1至R9,R11至R18,R21至R27,Ar,L1,
L2和L3如描述中所定义。